PERMFILE103876

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 10 VEGETATION INFORMATION
• Media Type: D
• Archive: No

31
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RUNOFF PLOTS
11 ft. x 7s ft. Plots
Erosion must be considered when developing a reclamation plan.
Quantifying the runoff and sediment yield from pots receiving dif-
ferent seeding management treatments will provide information on
erosion potential per treatment.
_ The treatments used in this study range from the least inten-
slue seeding management treatment to the most intensive treatment
that may have to be used in revegetation work in the mountain shrub
vegetative type. Treatments 1 and 2 are the least intensive; with
the management practice being just seeding. Treatment 3 is the
mast intensive; the management practice includes seeding, mulching,
and fertilizing.
Ideally, all management treatments of the. previous study should
be tested for runoff and sediment yield. However, a compromise
using the four following treatments should provide the necessary
information.
• 1. Shrubs only: shrubs seeded at the rate of
serviceberry, 1 lb/A; snowberry, z lb/A;
bitterbrush, z lb/A; and oak, 1 acorn/20 sq. ft.
(3 replications).
2. Shrubs, grasses, and forbs: shrubs are
seeded at the above rate plus slender wheat-
grass, 10 lb/A; smooth brome, 10 lb/A;
penstemon, 2 lb/A; and Utah sweetvetch,
Z 1bjA (3 replications).
3. Shrubs, grasses. ar.d forbs - mulched and
fertilized: shrubs, grasses, and forbs
were seeded at the above rates and the
~ plots mulched with 2 T/A alfalfa. The
plots were fertilized with 60 lb N/A in
the spring of 1976 (3 replications).
4. Shrubs, grasses, and forbs -mulched:
seeding was done at the above rates and
the plot was mulched with 2 T/A alfalfa
(1 replication).
Ten 11 ft. x 73 ft. runoff plots (Figure 8) were put in on a
]8ro north-facing slope. Three of the seeding management treatments
were replicated three times each, and one was put in on only one
plot. The length of these runoff plots is a standardized size,